package com.atues.service.impl;

import com.atues.domain.ResponseResult;
import com.atues.domain.SystemConstants;
import com.atues.domain.entity.Article;
import com.atues.domain.entity.Category;
import com.atues.domain.vo.ArticleDetailVo;
import com.atues.domain.vo.ArticleListVo;
import com.atues.domain.vo.HotArticleVo;
import com.atues.domain.vo.PageVo;
import com.atues.mapper.ArticleMapper;
import com.atues.service.CategoryService;
import com.atues.utils.BeanCopyUtils;
import com.atues.utils.RedisCache;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.IService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atues.service.ArticleService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;
import java.util.Objects;
import java.util.stream.Collectors;

/**
 * 文章表(Article)表服务实现类
 *
 * @author Liqun
 * @since 2024-08-26 11:54:58
 */
@Service
public class ArticleServiceImpl extends ServiceImpl<ArticleMapper, Article> implements ArticleService {
    @Autowired
    private RedisCache redisCache;

    @Autowired
    private CategoryService categoryService;
    @Override
    public ResponseResult getHotArticleList() {
        //查询热门文章 封装成ResponseResult返回
        LambdaQueryWrapper<Article> queryWrapper = new LambdaQueryWrapper<>();
        //必须是正式文章
        queryWrapper.eq(Article::getStatus,0);
        //按照浏览量进行排序
        queryWrapper.orderByDesc(Article::getViewCount);
        //最多只查询10条
        Page<Article> page = new Page(1,10);
        page(page,queryWrapper);
        List<Article> articles = page.getRecords();

        List<HotArticleVo> vs = BeanCopyUtils.copyBeanList(articles, HotArticleVo.class);
        return ResponseResult.okResult(vs);

    }

    @Override
    public ResponseResult updateViewCount(Long id) {
        //更新redis中对应 id的浏览量
        redisCache.incrementCacheMapValue("article:viewCount",id.toString(),1);
        return ResponseResult.okResult();
    }

    @Override
    public ResponseResult articleList(Integer pageNum, Integer pageSize, Long
            categoryId) {
        //查询条件
        LambdaQueryWrapper<Article> lambdaQueryWrapper = new
                LambdaQueryWrapper<>();
        // 如果 有categoryId 就要 查询时要和传入的相同
        lambdaQueryWrapper.eq(Objects.nonNull(categoryId)&&categoryId>0
                ,Article::getCategoryId,categoryId);
        // 状态是正式发布的

        lambdaQueryWrapper.eq(Article::getStatus, SystemConstants.ARTICLE_STATUS_NORMAL)
        ;
// 对isTop进行降序
        lambdaQueryWrapper.orderByDesc(Article::getIsTop);
//分页查询
        Page<Article> page = new Page<>(pageNum,pageSize);

        page(page,lambdaQueryWrapper);
        List<Article> articles = page.getRecords();
//查询categoryName
        //map中必须返回一个类型，但setCategoryname返回的是void，会报错；
        // @Accessors(chain = true)在实体类价格注解，

        articles.stream()
                .map(article ->
                        article.setCategoryName(categoryService.
                                getById(article.getCategoryId()).getName()))
                .collect(Collectors.toList());
//articleId去查询articleName进行设置
// for (Article article : articles) {
// Category category =
//        categoryService.getById(article.getCategoryId());
// article.setCategoryName(category.getName());
// }
//封装查询结果
        List<ArticleListVo> articleListVos =
                BeanCopyUtils.copyBeanList(page.getRecords(), ArticleListVo.class);
        PageVo pageVo = new PageVo(articleListVos,page.getTotal());
        return ResponseResult.okResult(pageVo);
    }

    @Override
    public ResponseResult getArticleDetail(Long id) {
        Article article = getById(id);

        ArticleDetailVo articleDetailVo = BeanCopyUtils.copyBean(article, ArticleDetailVo.class);
        Long categoryId = articleDetailVo.getCategoryId();
        Category category = categoryService.getById(categoryId);
        if (category != null) {
            articleDetailVo.setCategoryName(category.getName());

        }
        Integer viewCount = redisCache.getCacheMapValue("article:viewCount", id.toString());
        articleDetailVo.setViewCount(viewCount.longValue());


        return ResponseResult.okResult(articleDetailVo);
    }

}

